Fuel injection system



Sept. 18, 1962 F. A. F. SCHMIDT 3,

FUEL INJECTION SYSTEM Filed Feb. 4, 1958 20 Sheets-Sheet 1 BRAKE SPECIFIC FUEL CON$UMP77ON MS CONSTANT SPEED A/R FUEL RA 770 E NG/NE PERFORMANCE CURVE Fe (POWER) be (BRAKE SPECIFIC FUEL I I CONSUMPTION) MINIMUM CONSUMPTION i z I h 1 l 1 men 0.85 120 ms LEAN LAMBDA IR FUEL RATIO (A AHEORETICAL AIR FUEL RATIO) INVENTOR FRITZ ,4. 1-: SCHMIDT ATTORNEYS Sept. 18, 1962 F. A. F. SCHMIDT FUEL INJECTION SYSTEM 20 Sheets-Sheet 2 Filed Feb. 4, 1958 drLr EugmumQOI INVENTOR FRITZ A. E SCHMIDT ATTORNEYS ZOFPEEDWZOU JUDL ufzumlw uxm F. A. F. SCHMIDT FUEL INJECTION SYSTEM Sept. 18, 1962 20 Sheets-Sheet 5 Filed Feb. 4, 1958 IN VENTOR FRITZ .4. F. SCHM/DT ATTORNEYS Sept. 18, 1962 F. A. F. SCHMIDT 3,054,393

FUEL INJECTION SYSTEM Filed Feb. 4, 1958 20 Sheets-Sheet 4 PARAMETER: ENGINE SPEED IN R/MIN.

0 stroke 1/4 Nmax I /2 Nmux 3/4 Nmox Nmax V4 V2 3/4 0/4 LOAD MOTOR LOAD PARAMETER: MOTOR LOAD DURING CONSTANT THROTTLE POSITION IN THE RESPECTIVE LOAD STEPS 1/2 LOAD 1/4 LOAD IDLING I/4 Nmux I/2 Nmclx 3/4 Nmux Nmux ENG/IVE SPEED INVENTOR F/a/Tz A. E SCHMIDT BY DMLf/v ATTORNEYS Sept. 18, 1962 Filed Feb. 4, 1958 F. A. F. SCHMIDT FUEL INJECTION SYSTEM 20 Sheets-Sheet 5 INVENTOR FRITZ A. E SCHMIDT Sept. 18, 1962 F. A. F. SCHMIDT 3,

FUEL INJECTION SYSTEM Filed Feb. 4, 1958 20 Sheets-Sheet 6 MAX.

SLOT OVERLAP ID LE M'Ax.

RPM. DISTR/BUTOR SLOT OVERLAP REQU/RED BY ENG/NE FUEL REQU/lQEI'ME/V7T5- MAX.

FUEL WEIGHT PER INJECTION IDILE M'Axv FLFEM.

D/STR/BUTOR DEL/VERY AT CONSTANT 1N VENTOR PRESSURE W/TH ONLY M4R/A T/ON OF SLOT OVERLAP occuRR/Nc FRITZ A. E SCHMIDT 2%6RN s Sept. 18, 1962 F. A. F. SCHMIDT FUEL INJECTION SYSTEM 20 Sheets-Sheet 7 Filed Feb. 4, 1958 INVENTOR FRITZ A. E SCHMIDT 20 Sheets-Sheet 8 INVENTOR FRITZ A. E SCHMIDT fill/L T r F. A. F. SCHMIDT FUEL INJECTION SYSTEM Sept. 18, 1962 Filed. Feb. 4, 195a Sept. 18, 1962 F. A. F. SCHMIDT 3,054,393

FUEL INJECTION SYSTEM Filed Feb. 4, l958 2O Sheets-Sheet 9 O 57 1|B\ W 1 INVENTOR FRITZ A. F SCHMIDT Sept. 18, 1962 F. A. F. SCHMIDT 3,

FUEL INJECTION SYSTEM Filed Feb. 4, 1958 20 Sheets-Sheet 10 PUMP L. l INVENTOR FRITZ A. E SCHMIDT 6% Dal-U431} A RNEYS Sept. 18, 1962 F. A. F. SCHMIDT 3,054,393

FUEL INJECTION SYSTEM Filed Feb. 4, 1958 2o Sheets-Sheet 11 INVENTOR FRITZ .4. E SCHMIDT Dug? AT Q' SZZEYs Sept. 18, 1962 F. A. F. SCHMIDT 3,054,393

FUEL INJECTION SYSTEM Filed Feb. 4, 1958 20 Sheets-Sheet 12 FU L L LOAD QUANTITY ACLE HALF LOAD i A DD |NG ONE HOLE REVS.

FRITZ A. E SCHMIDT INVENTOR Sept. 18, 1962 F. A. F. SCHMIDT 3,054,393

FUEL INJECTION SYSTEM Filed Feb. 4, 1958 20 Sheets-Sheet l3 \\\\\\\"Illll (I&

INVENTOR FRITZ ,4. F: SCHMIDT naw, Dw

ORN Y5 Sept. 18, 1962 F. A. F. SCHMIDT 3,054,393

FUEL INJECTION SYSTEM Filed Feb. 4, 1958 20 SheetsSheet l4 I'M L INVENTOR FRITZ A. F. SCHMIDT A RNEYS Sept. 18, 1962 F. A. F. SCHMIDT FUEL INJECTION SYSTEM Filed Feb. 4, 1958 20 Sheets-Sheet 15 INVENTOR FRITZ A. E SCHMIDT 45 K iwam F. A. F. SCHMIDT FUEL INJECTION SYSTEM Sept. 18, 1 962 20 Sheets-Sheet 16 Filed Feb. 4, 1958 m wmiV/fa a 7 l m V I /Y I w INVENTOR FRITZ A. E SCHMIDT Sept. 18, 1962 F. A. F. SCHMIDT FUEL INJECTION SYSTEM 20 Sheets-Sheet 17 Filed Feb. 4, 1958 INVENT OR FRITZ A. E SCHMIDT D 1 ATTORNEYS Sept. 18, 1962' F. A. F. SCHMIDT 3,054,393

FUEL INJECTION SYSTEM NORMAL SPEED IDLE SPEED INJECTED M IM M SPEED QUANTIP! u INVENIOR FRITZ A. F. SCHMIDT cRAmsnAFT ANGLE T .1' .41 BY 61w RNEYS Sept. 18, 1962 Filed Feb. 4, 1958 FUEL F. A. F. SCHMIDT FUEL INJECTION SYSTEM HIGH PRESSURE PUMP DISTRIBUTOR.

TO STARTER [I45 I47 20 Sheets-Sheet 19 \IISHUTOFF VALVE I? PUMP-HIGH r P "RE DISTRIBUTOR 9 GA; L-- .27 FEM.

PUMP- LOW 146 PRESSURE 23 GAS TANK u INVENTOR FRITZ A. E SCHMIDT 1:;4-1":

ATTORNE Y5 Sept. 18, 1962 F. A. F. SCHMIDT 3,054,393

FUEL INJECTION SYSTEM Filed Feb. 4, 1958 20 Sheets-Sheet 2O /7 l pnfiaz msmad'ron. T

" J 7 PEDAL PUMP- LOW PRESSURE GAS TANK V IN VEN 1 OR FRITZ A. E SCHMIDT 

